Set up legacy branch, add that this version is no longer maintained

Author: mpsijm

Dockerfile

@@ -1,4 +1,4 @@
-# NOTE: This installs the BAPCtools version from the GitHub master branch.
+# NOTE: This installs the BAPCtools version from the GitHub legacy branch.
 FROM archlinux:latest
 MAINTAINER ragnar.grootkoerkamp@gmail.com
 
@@ -37,7 +37,7 @@ RUN pacman -Syu --noconfirm \
 	cue \
 	&& pacman -Scc --noconfirm
 
-RUN git clone https://github.com/RagnarGrootKoerkamp/BAPCtools /opt/bapctools && \
+RUN git clone https://github.com/RagnarGrootKoerkamp/BAPCtools /opt/bapctools --branch legacy && \
 	ln -sfn /opt/bapctools/bin/tools.py /usr/bin/bt && ln -sfn /opt/bapctools/third_party/checktestdata /usr/bin/checktestdata
 
 RUN mkdir /data

doc/commands.md

@@ -418,7 +418,7 @@ image: bapctools
 
 default:
   before_script:
-    - git -C /cache/BAPCtools pull || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /cache/BAPCtools
+    - git -C /cache/BAPCtools pull || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /cache/BAPCtools --branch legacy
     - ln -s /cache/BAPCtools/bin/tools.py bt
 
 contest_pdf_nwerc2020:

readme.md

@@ -13,10 +13,16 @@ time since I'm not aware of usage outside of BAPC yet.
 
 ## Installation
 
-You can install the [bapctools-git AUR
-package](https://aur.archlinux.org/packages/bapctools-git/), mirrored
-[here](https://github.com/RagnarGrootKoerkamp/bapctools-git), or use the [Docker
-image](#Docker).
+> [!IMPORTANT]
+> The `legacy` version of BAPCtools is no longer maintained.
+> Please use the latest version, which is compatible with problem format version
+> [`2023-07-draft`](https://icpc.io/problem-package-format/spec/2023-07-draft.html).
+> The `bt upgrade` command in the latest version of BAPCtools
+> is a best-effort automated way to upgrade `legacy` problems to `2023-07-draft`.
+
+You can install the [bapctools-git AUR package](https://aur.archlinux.org/packages/bapctools-git/),
+mirrored [here](https://github.com/RagnarGrootKoerkamp/bapctools-git),
+or use the [Docker image](#Docker).
 
 Otherwise, clone this repository and install the required dependencies manually.
 (If you know how to make a Debian package, feel free to help out.)
@@ -99,9 +105,9 @@ For maintainers, these are the steps to build and push an updated image:
 $ sudo systemctl start docker
 $ docker pull archlinux:latest
 $ docker login
-$ docker build . -t ragnargrootkoerkamp/bapctools
-$ docker push ragnargrootkoerkamp/bapctools
-$ ssh <server> sudo docker pull ragnargrootkoerkamp/bapctools
+$ docker build . -t ragnargrootkoerkamp/bapctools:legacy
+$ docker push ragnargrootkoerkamp/bapctools:legacy
+$ ssh <server> sudo docker pull ragnargrootkoerkamp/bapctools:legacy
 ```
 
 The last step is needed when your CI server is not automatically pulling the latest version.

skel/forgejo_actions_latest_bt/setup.yaml

@@ -4,5 +4,5 @@ runs:
   steps:
     - name: update BAPCtools
       run: |
-        git -C /opt/hostedtoolcache/BAPCtools pull --ff-only || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /opt/hostedtoolcache/BAPCtools
+        git -C /opt/hostedtoolcache/BAPCtools pull --ff-only || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /opt/hostedtoolcache/BAPCtools --branch legacy
         ln -s /opt/hostedtoolcache/BAPCtools/bin/tools.py bt

skel/gitlab_ci/header_latest_bt.yaml

@@ -4,5 +4,5 @@ image:
 
 default:
   before_script:
-    - git -C /cache/BAPCtools pull --ff-only || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /cache/BAPCtools
+    - git -C /cache/BAPCtools pull --ff-only || git clone https://github.com/RagnarGrootKoerkamp/BAPCtools.git /cache/BAPCtools --branch legacy
     - ln -s /cache/BAPCtools/bin/tools.py bt